Work-holding clamp



J. P. LEIMBACH.

WORK HOLDING CLAMP.

APPLICATION FILED 02c. n. 1918.

1,306,433. Patented June 10, 1919.

'LJ 4 p I 3 i 52/ j 2 A2 10 Fig.5.

J HN EIMB Q A MQ E M RYLAND.-

WQRK-HOLDING CLAMP.

Specification of Letters Patent.

Patented June 10 1919.

Application filed December 11, L918. SerialNo. 266,226.

To all whom i may ncern:

Be it known that I, Join: P. LEIMBACII, a citizen of the United States,residing at Baltimore, in the State of Maryland, have invented certainnew and useful Improve ments in VVork-HoldingClarnps; and I do herebydeclare the following to be a full, clear, and exact description of theinvention, such as will enable others skilled in the art to which itappertains to make and use the same.

My invention relates to work holding clamps.

One object of my invention is to provide a work holding clamp which canbe readily placed in position and brought into engagement with the workto he held.

Another object of my invention is to provide a work holding clamp whichmay also be used as a jack.

Another object of my invention is to provide a simple, cheap, strong andeliective work holding clamp.

In the drawings Figure 1 is a plan view of my improved work holdingclamp.

Fig. 2 is a view of the clamp shown in Fig. 1 looking in the directionof the arrow 2 in said figure.

Fig. 3 is a section along the line 33 in Fig. 1 looking in the directionof the arrows.

Fig. 4 is a view of the body and screw of my improved clamp when viewedin the direction of the arrow 4 in Fig. 2.

Fig. 5 is a section along the line 55 in Fig. 2 looking in the directionof the arrows.

In the drawings 10 represents the body of my improved clamp, which isprovided with a flat sur face forming the base at 11 to rest upon theplaten of a drill press, the slide of a milling machine, or upon anypart of a tool to which it is desirable to afiix my improved clamp.

For the purpose of securing the body 10 to any part of a tool with whichit is to be used, the slot 12 is provided in the body 10 for thereception by the body of a bolt (not shown.)

13 is the housing for the set screw 14, said housing and the other partsof the body 10 being preferably cast integrally.

The housing 13 is provided with a recess 15 for the reception of thebody of the screw 14. The recess 15 is terminated at the ends by theshoulders 16 and 17, the

abutting surfaces of which form shoulder bearings for the ends of thebody of the screw 14;.

The body of the screw 14: is provided at its lower end with a pintle 18and at its upper end with a pintle 19, the latter terminating in asquared portion 20 which is provided for the application of a socketwrench thereon. The pintles 18 and 19 are mounted respectively in theslots 21 and 22, formed respectively in the foot 23 and the top 24 ofthe body 10. The slots 21 and 22, as shown respectively in Figs. 4 and1, are provided with two parallel sides joining a circular portion andsaid parallel sides and circular portion of said slots respectively formbearings respectively for the pintles 18 and 19.

The top 24 is provided with the recess-25 forthe insertion of the socketof a wrench therein when the set screw 14 is to be turned.

The housing 13 is provided with slots 2626 and with gibs 2727.

The slide 28 is provided with gibs 2929 which slide in the slots 26-26of the housing 18, and said slide is furthermore provided with slots3030 for the reception of the gibs 2727 of the housing 13.

The slide 28 is provided with a threaded portion 31 which is threadedupon the set screw 14.

The slide 28 comprises the too 32 projecting laterally therefrom andprovided with a flat bottom 33 and with the chamfered portions 3M4.

The parts hercinbefore described are suitable for use as a work holdingclamp, and in order to make my clamp also adaptable for use as a jack, Iinsert the oval headed pins 35 and 36 in suitable holes provided in thetoe 32 and in the top of the slide 28 respectively.

The manner of use of my improved work holdin clamp is as follows The ase11 is applied to any suitable portion of the tool with which my improvedclamp is to be used and the nut on the end of the bolt, the body ofwhich passes through the slide 12, is set up in order to clamp the body10 upon the tool. The socket wrench is then to be applied to the squaredportion 20 of the set screw 14 and said screw is to be turned until thebottom 33 of the toe 32 clamps upon the work which is to be held.

When my improved clamp is to be used as a jack, the body 10 is to befastened to the tool, as before explained, and the screw 14 turned inorder to bring either the pin 35 or 36 up in contact with the work whichis to be supported.

Thus it will be seen that I provide a si1nple, cheap, strong andeffective work holding clamp which may also be used as a ack and inwhich many changes might be made without departing from the spirit of myinven tion.

I claim 1. A work holding clamp comprising a body, a slide slidablysecured in said body, a set screw revolubly secured in said body andengaging said slide, and shoulder bearings for said screw formed on saidbody.

2. A work holding clamp comprising a body, a slide slidably secured insaid body, a toe formed on said slide, and a set screw rev olublysecured in said body and engaging said slide, and shoulder bearings forsaid screw formed on said body.

3. A work holding clamp comprising a body, a slide slidably secured insaid body, a toe formed on said slide, a set screw revolubly secured insaid body engaging said slide and pins secured in the top of said toeand slide.

4. A work holding clamp comprising a foot and a housing formedintegrally, a slot 30 in said foot for the reception of a bolt, a setscrew comprising a threaded portion, pintles and a squared portion onone pintle, a recess in said housing for the reception of said threadedportion, bearings in said housing for said pintles, and a slide slidablymounted in said housing and engaging said threaded portion.

5. A work holding clamp comprising a foot and a housing formedintegrally, a slot in said foot for the reception of a bolt, slots andgibs formed in said housing, a slide comprising gibs for sliding in saidslots and slots for the reception of the gibs on said housing, a workholding toe on said slide, pins mounted in said toe and in the top ofsaid slide, and means for moving said slide along said housing.

In testimony whereof, I aflix my signature.

JOHN P. LEIMBAOH.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. G.

